JP5568575B2 - Rechargeable battery pack with new structure - Google Patents

Rechargeable battery pack with new structure Download PDF

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JP5568575B2
JP5568575B2 JP2011551977A JP2011551977A JP5568575B2 JP 5568575 B2 JP5568575 B2 JP 5568575B2 JP 2011551977 A JP2011551977 A JP 2011551977A JP 2011551977 A JP2011551977 A JP 2011551977A JP 5568575 B2 JP5568575 B2 JP 5568575B2
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battery cell
electrode terminal
pcb
connection member
coupling
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JP2012519352A (en
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ジュファン・ペク
サンクウォン・ナム
スクジン・ソン
テ−ウク・キム
ジンヒュン・リュ
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LG Chem Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117Inorganic material
    • H01M50/119Metals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/124Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147Lids or covers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/528Fixed electrical connections, i.e. not intended for disconnection
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/574Devices or arrangements for the interruption of current
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/574Devices or arrangements for the interruption of current
    • H01M50/581Devices or arrangements for the interruption of current in response to temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/584Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/584Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/595Tapes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00Safety devices for primary or secondary batteries
    • H01M2200/10Temperature sensitive devices
    • H01M2200/106PTC
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49108Electric battery cell making
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49108Electric battery cell making
    • Y10T29/4911Electric battery cell making including sealing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49108Electric battery cell making
    • Y10T29/49114Electric battery cell making including adhesively bonding

Description

本発明は、新規の構造の二次バッテリーパックに関し、より具体的には、カソード/セパレータ/アノード構造の電極組立体が電解質と一緒に密閉された状態でバッテリーケース内に取り付けられる構造を有するように構成されたバッテリーセルであって、バッテリーケースはその上部に第1の電極端子と、第2の電極端子と、一対の結合溝と、が設けられ、結合溝のうちの1つは第1の電極端子に形成され、第2の電極端子はバッテリーケース上部の中央から突出する、バッテリーセルと、保護回路が上に形成されているプリント回路基板(PCB)、第1の電極端子および第2の電極端子にそれぞれ接続される接続部材Aおよび接続部材B、ならびに安全要素を含む保護回路モジュール(PCM)と、PCMを囲むようにバッテリーセルの上部に取り付けられる電気的に絶縁された上部キャップであって、それぞれの結合溝に通じる貫通孔を有する電気的に絶縁された上部キャップと、を含む。接続部材Aは、バッテリーセルの第1の電極端子に接続される接続部材Aの接続部が、上部キャップに形成された貫通孔のうちの対応する1つを通じて露出されるように、接続部材AがPCBの一端から横方向に突出する状態で、PCBの底部に結合される。結合孔は、接続部材Aの突出部分に形成される。バッテリーセルの第2の電極端子に接続される接続部材Bの接続部は、接続部材Bが安全要素を介して第2の電極端子に電気的に接続されるようにPCBの底部に位置付けられる。結合部材は、PCMおよび上部キャップがバッテリーセルの上部に配設されている状態で上部キャップの貫通孔を通じてバッテリーセルのそれぞれの結合溝に結合される。接続部材Aは、結合部材のうちの対応する1つによって第1の電極端子に機械的に結合され且つ電気的に接続される二次バッテリーパックに関する。   The present invention relates to a secondary battery pack having a novel structure, and more specifically, has a structure in which an electrode assembly having a cathode / separator / anode structure is mounted in a battery case in a sealed state together with an electrolyte. The battery case is provided with a first electrode terminal, a second electrode terminal, and a pair of coupling grooves on an upper portion of the battery case, and one of the coupling grooves is a first one. The second electrode terminal protrudes from the center of the upper part of the battery case, the battery cell, the printed circuit board (PCB) on which the protection circuit is formed, the first electrode terminal and the second electrode terminal. A protective circuit module (PCM) including a connection member A and a connection member B, and safety elements, respectively, connected to the electrode terminals of A top cap that is, comprising electrically insulated upper cap having a through hole communicating with the respective coupling grooves, the. The connection member A is connected such that the connection portion of the connection member A connected to the first electrode terminal of the battery cell is exposed through a corresponding one of the through holes formed in the upper cap. Is coupled to the bottom of the PCB with the side protruding laterally from one end of the PCB. The coupling hole is formed in the protruding portion of the connection member A. The connecting portion of the connecting member B connected to the second electrode terminal of the battery cell is positioned at the bottom of the PCB such that the connecting member B is electrically connected to the second electrode terminal via the safety element. The coupling member is coupled to each coupling groove of the battery cell through the through hole of the upper cap in a state where the PCM and the upper cap are disposed on the upper part of the battery cell. The connection member A relates to a secondary battery pack that is mechanically coupled to and electrically connected to the first electrode terminal by a corresponding one of the coupling members.

移動体デバイスが続々と開発され、そのような移動体デバイスの需要が増すにつれて、二次バッテリーの需要もまた急激に増加した。そのような二次バッテリーの中でも、リチウム二次バッテリーは、高エネルギー密度および高動作電圧、ならびに優れた保存性および優れた耐用寿命特性を示しており、さまざまな電子製品および移動体デバイスの電源として広く使用されてきた。   As mobile devices have been developed one after another and the demand for such mobile devices has increased, the demand for secondary batteries has also increased rapidly. Among such secondary batteries, lithium secondary batteries exhibit high energy density and high operating voltage, as well as excellent shelf life and excellent service life characteristics, as a power source for various electronic products and mobile devices. Have been widely used.

しかしながら、リチウム二次バッテリーにはさまざまな可燃物質が含まれている。その結果、リチウム二次バッテリーは、過充電、過電流、または何らかの他の外部からの物理的衝撃によって加熱または爆発するという点で危険の可能性がある。つまり、リチウム二次バッテリーは、安全性が低い。結果として、過充電または過電流などのリチウム二次バッテリーの異常な状態を効果的に制御するために、正の温度係数(PTC)要素および保護回路モジュール(PCM)などの安全要素は、その安全要素がリチウム二次バッテリーのバッテリーセルに接続されている状態で、リチウム二次バッテリーに取り付けられる。   However, lithium secondary batteries contain various combustible materials. As a result, lithium secondary batteries can be dangerous in that they can heat or explode due to overcharging, overcurrent, or some other external physical shock. That is, the lithium secondary battery is not safe. As a result, safety elements such as positive temperature coefficient (PTC) elements and protection circuit modules (PCM) are required to effectively control abnormal conditions of lithium secondary batteries such as overcharge or overcurrent. The element is attached to the lithium secondary battery with the element connected to the battery cell of the lithium secondary battery.

概して、PCMは、溶接または半田付けによって、導電性のニッケル板を介してバッテリーセルに接続される。つまり、ニッケル板は、溶接または半田付けによってPCMの電極タブに接続され、そして次に、ニッケル板は、溶接または半田付けによって、バッテリーセルの電極端子に接続される。このようにしてPCMはバッテリーセルに接続され、それによってバッテリーパックを製造する。   Generally, the PCM is connected to the battery cell via a conductive nickel plate by welding or soldering. That is, the nickel plate is connected to the electrode tab of the PCM by welding or soldering, and then the nickel plate is connected to the electrode terminal of the battery cell by welding or soldering. In this way, the PCM is connected to the battery cell, thereby producing a battery pack.

このようなPCMを含む安全要素は、バッテリーセルの電極端子との電気的接続が維持されると同時に、バッテリーセルの他の部分から電気的に絶縁される必要がある。このような接続を実現するためには、複数の絶縁取り付け部材または複数のパーツが必要であり、その結果、バッテリーパックを組み立てるプロセスが複雑化され、バッテリーセルを受け入れるスペースの大きさが小さくされる。   Such a safety element including PCM needs to be electrically insulated from other parts of the battery cell while maintaining an electrical connection with the electrode terminal of the battery cell. In order to realize such a connection, a plurality of insulating mounting members or a plurality of parts are required, and as a result, the process of assembling the battery pack is complicated, and the size of the space for receiving the battery cells is reduced. .

また、複数の溶接または半田付けプロセスがバッテリーパックを組み立てるために必要とされる。そのような溶接プロセスは、二次バッテリーの構造が非常に小さいために高精度で行われなければならず、その結果、欠陥率が大きくなることがある。さらに、そのようなプロセスが製品を製造するために追加されるので、結果として、製品の製造コストが上がる。   Also, multiple welding or soldering processes are required to assemble the battery pack. Such a welding process must be performed with high accuracy because the structure of the secondary battery is very small, and as a result, the defect rate may increase. Furthermore, since such a process is added to produce the product, the production cost of the product increases as a result.

したがって、電極端子がPCMに機械的に結合され、かつ電気的に接続されるようにバッテリーセルの上部構造を修正することが可能である。この場合、バッテリーセルの上部に配設されるパーツの数を削減することが可能であり、PCMおよび上部キャップが突出電極端子に順番に接続される構造のバッテリーパックを製造することができる。   Therefore, it is possible to modify the superstructure of the battery cell so that the electrode terminals are mechanically coupled and electrically connected to the PCM. In this case, the number of parts disposed on the upper part of the battery cell can be reduced, and a battery pack having a structure in which the PCM and the upper cap are sequentially connected to the protruding electrode terminals can be manufactured.

しかしながら、電極端子が修正される構造は、バッテリーセルが新たに設計されることを要求する。そのため、通常のバッテリーセルの製造プロセスおよび通常のバッテリーパックの製造プロセスは、変更させなければならず、その結果、製造コストが増加する。   However, the structure in which the electrode terminal is modified requires that the battery cell be newly designed. Therefore, the normal battery cell manufacturing process and the normal battery pack manufacturing process must be changed, resulting in an increase in manufacturing cost.

したがって、通常のバッテリーセルを使用し、かつ通常の組立方法を最大限に利用しながら、バッテリーセルの上部に取り付けられる部材の数を削減して、それによって組立プロセスを簡単化し、溶接プロセス数を減らして、それによってバッテリーセルの組立中の欠陥率を最小化し、バッテリーセルの上部に配設された部材間の安定した結合を実現し、バッテリーセルの容量を向上させる技術に対する高い要求がある。   Therefore, while using normal battery cells and making the most of the normal assembly method, the number of members attached to the top of the battery cell is reduced, thereby simplifying the assembly process and reducing the number of welding processes. There is a high demand for techniques to reduce and thereby minimize the defect rate during assembly of the battery cell, achieve stable coupling between members disposed on the top of the battery cell, and improve the capacity of the battery cell.

したがって、本発明は、上記の問題、および未だに解決されていない他の技術的問題を解決するためになされた。   Therefore, the present invention has been made to solve the above-mentioned problems and other technical problems that have not yet been solved.

具体的には、本発明の目的は、バッテリーパックを製造するために必要なパーツの数が削減され、バッテリーパックを組み立てるプロセスが簡略化され、それによってバッテリーパックの製造コストを削減する構造を有するように構成された二次バッテリーパックを提供することにある。   Specifically, the object of the present invention has a structure that reduces the number of parts required to manufacture a battery pack, simplifies the process of assembling the battery pack, thereby reducing the manufacturing cost of the battery pack. A secondary battery pack configured as described above is provided.

本発明の別の目的は、一般的なバッテリーセルおよび一般的な組立方法を最大限に用いてバッテリーパックが製造される構造を有するように構成された二次バッテリーパックを提供することである。   Another object of the present invention is to provide a secondary battery pack configured to have a structure in which a battery pack is manufactured using a general battery cell and a general assembly method to the maximum.

本発明の一態様によれば、上記目的およびその他の目的は、カソード/セパレータ/アノード構造の電極組立体が電解質と一緒に密閉された状態でバッテリーケース内に取り付けられる構造を有するように構成されたバッテリーセルであって、バッテリーケースはその上部に第1の電極端子、第2の電極端子、および一対の結合溝が設けられ、結合溝のうちの1つが第1の電極端子に形成され、第2の電極端子がバッテリーケース上部の中央から突出するバッテリーセルと、保護回路が上に形成されているプリント回路基板(PCB)、第1の電極端子および第2の電極端子にそれぞれ接続される接続部材Aおよび接続部材B、ならびに安全要素を含む保護回路モジュール(PCM)と、PCMを囲むようにバッテリーセルの上部に取り付けられる電気的に絶縁された上部キャップであって、それぞれの結合溝に通じる貫通孔を有する電気的に絶縁された上部キャップと、を含み、接続部材Aは、バッテリーセルの第1の電極端子に接続される接続部材Aの接続部が上部キャップに形成された貫通孔のうちの対応する1つを通じて露出されるように、接続部材AがPCBの一端から横方向に突出する状態で、PCBの底部に結合され、結合孔が接続部材Aの突き出した部分に形成され、バッテリーセルの第2の電極端子に接続される接続部材Bの接続部は、接続部材Bが安全要素を介して第2の電極端子に電気的に接続されるようにPCBの底部に位置付けられ、結合部材は、PCMおよび上部キャップがバッテリーセルの上部に配設されている状態で上部キャップの貫通孔を通じてバッテリーセルのそれぞれの結合溝に結合され、接続部材Aは、結合部材のうちの対応する1つによって第1の電極端子に機械的に結合されるとともに電気的に接続される二次バッテリーパックを提供することによって達成される。   According to an aspect of the present invention, the above and other objects are configured to have a structure in which a cathode / separator / anode structure electrode assembly is mounted in a battery case in a sealed state together with an electrolyte. The battery case is provided with a first electrode terminal, a second electrode terminal, and a pair of coupling grooves on the upper part of the battery case, and one of the coupling grooves is formed on the first electrode terminal, The second electrode terminal is connected to the battery cell protruding from the center of the upper part of the battery case, the printed circuit board (PCB) on which the protection circuit is formed, the first electrode terminal, and the second electrode terminal, respectively. A protective circuit module (PCM) that includes connection member A and connection member B, and safety elements, and an electrically isolated upper cap that is attached to the top of the battery cell to surround the PCM. A connection member A connected to the first electrode terminal of the battery cell, wherein the connection member A is connected to the first electrode terminal of the battery cell. The connecting member A is coupled to the bottom of the PCB with the connecting member A protruding laterally from one end of the PCB so that the portion is exposed through a corresponding one of the through holes formed in the upper cap, and the coupling hole is The connection part of the connection member B formed on the protruding part of the connection member A and connected to the second electrode terminal of the battery cell is electrically connected to the second electrode terminal via the safety element. Positioned at the bottom of the PCB, the coupling member is coupled to the respective coupling groove of the battery cell through the through hole of the upper cap with the PCM and the top cap disposed at the top of the battery cell, and connected Member A is connected This is accomplished by providing a secondary battery pack that is mechanically coupled and electrically connected to the first electrode terminal by a corresponding one of the members.

すなわち、本発明に係る二次バッテリーパックにおいて、PCBの一端から横方向に突出する接続部材Aは、結合部材のうちの対応する1つによってバッテリーセルの第1の電極端子に電気的に接続されるとともに機械的に結合される。したがって、シンプルな接続方法によって所定の組立プロセスを実行し、バッテリーパックを容易に製造し、それによって製造処理のしやすさを大幅に向上させることができる。   That is, in the secondary battery pack according to the present invention, the connection member A protruding laterally from one end of the PCB is electrically connected to the first electrode terminal of the battery cell by a corresponding one of the coupling members. And mechanically coupled. Therefore, a predetermined assembly process can be executed by a simple connection method, and the battery pack can be easily manufactured, thereby greatly improving the ease of the manufacturing process.

また、接続部材Bは、安全要素を介して第2の電極端子に電気的に接続され、それによってバッテリーパックの安全性を向上させる。さらに、一般的なバッテリーセルが、バッテリーパックの製造のために使用される。したがって、バッテリーセルの構造を大きく変更することなく、バッテリーパックの製造処理のしやすさを大幅に向上させることができる。   Further, the connection member B is electrically connected to the second electrode terminal via a safety element, thereby improving the safety of the battery pack. Furthermore, common battery cells are used for the manufacture of battery packs. Accordingly, it is possible to greatly improve the ease of manufacturing the battery pack without greatly changing the structure of the battery cell.

バッテリーケースは、容易に製造され、所定のレベルよりも優れた機械的強度を示すことが要求される。そのため、バッテリーケースは、金属容器であってよく、好ましくはアルミニウム容器またはステンレス鋼容器であってよい。   The battery case is required to be easily manufactured and to exhibit mechanical strength superior to a predetermined level. Therefore, the battery case may be a metal container, preferably an aluminum container or a stainless steel container.

好ましい実施例において、第1の電極端子はカソード端子とすることができ、第2の電極端子はアノード端子とすることができる。例えば、角型バッテリーセルは、バッテリーセルの上部から突出する電極端子、およびバッテリーケースが、それぞれアノード端子およびカソード端子を形成し、ガスケットなどの絶縁部材が、アノード端子とカソード端子との間に置かれ、それによって互いを絶縁する構造を有するように構成される。したがって、そのような角型バッテリーセルにおいて、第1の電極端子は、バッテリーケースの上部とすることができ、すなわちカソード端子とすることができ、第2の電極端子は、バッテリーケースの上部から突出するアノード端子とすることができる。   In a preferred embodiment, the first electrode terminal can be a cathode terminal and the second electrode terminal can be an anode terminal. For example, in a rectangular battery cell, an electrode terminal protruding from the top of the battery cell and a battery case form an anode terminal and a cathode terminal, respectively, and an insulating member such as a gasket is placed between the anode terminal and the cathode terminal. And thereby configured to have a structure that insulates each other. Therefore, in such a rectangular battery cell, the first electrode terminal can be the upper part of the battery case, that is, the cathode terminal, and the second electrode terminal can protrude from the upper part of the battery case. An anode terminal can be used.

好ましくは、結合溝は、バッテリーケースの上部の両端に位置付けられる。結合溝のうちの1つは、第1の電極端子に形成される。あるいは、2つの結合溝の両方が、第1の電極端子に形成されてもよい。しかしながら、第1の電極端子に位置付けられる結合溝のうちの1つは、結合部材のうちの対応する1つによってバッテリーセルに機械的に結合され、それによって接続部材Aを介したPCMとの電気的接続を実現する。   Preferably, the coupling grooves are positioned at both ends of the upper part of the battery case. One of the coupling grooves is formed in the first electrode terminal. Alternatively, both of the two coupling grooves may be formed in the first electrode terminal. However, one of the coupling grooves positioned on the first electrode terminal is mechanically coupled to the battery cell by a corresponding one of the coupling members, thereby electrically connecting the PCM via the connection member A. Real connection.

すでに説明されたように、接続部材Aは、接続部材AがPCBの回路に接続されている状態で接続部材がPCBの一端から横方向に突出するようにPCBの底部に結合させることができる。接続部材AとPCBとの間の結合(電気的接続)は、さまざまな方法で実現される。好ましくは、接続部材Aは、半田付けによってPCBの底部に結合される。   As already described, the connecting member A can be coupled to the bottom of the PCB such that the connecting member protrudes laterally from one end of the PCB with the connecting member A connected to the circuit of the PCB. The coupling (electrical connection) between the connection member A and the PCB can be realized by various methods. Preferably, the connection member A is coupled to the bottom of the PCB by soldering.

具体的な実施例において、接続部材Aは、PCBの底部に結合されるPCB結合部と、バッテリーセルの上部に結合されるバッテリーセル結合部と、を含むことができ、バッテリーセル結合部は、上部キャップの貫通孔のうちの対応する1つを通じてバッテリーセル結合部が露出されるようにPCBの一端から横方向に突出することができる。   In a specific example, the connection member A may include a PCB coupling part coupled to the bottom of the PCB and a battery cell coupling part coupled to the top of the battery cell, The battery cell coupling part may protrude laterally from one end of the PCB such that the battery cell coupling part is exposed through a corresponding one of the through holes of the upper cap.

接続部材Aは、PCBの一端から横方向に突出するバッテリーセル結合部によって、貫通孔のうちの対応する1つを有する上部キャップの上から結合部材の対応する1つを介してバッテリーセルに結合され、それによってバッテリーパックの製造処理のしやすさを向上させる。   Connecting member A is connected to the battery cell via the corresponding one of the connecting members from above the upper cap having the corresponding one of the through holes by the battery cell connecting portion protruding laterally from one end of the PCB Thereby, the ease of manufacturing the battery pack is improved.

また、第2の電極端子に接続される接続端子を、PCBの底部の、接続部材Aと反対側の部分に形成することができ、溶接によって第2の電極端子に結合される接続部材Bが、安全要素を介して接続端子に電気的に接続される。この構造において、安全要素とともにPCMに含まれる接続部材Bは、接続部材Bが絶縁キャップに取り付けられている状態で溶接によってバッテリーセルの第2の電極端子に結合され、それによってそれらの間の電気的接続を実現する。接続部材Bは、接続部材がバッテリーセルの上部に取り付けられるように曲げられる。   Further, the connection terminal connected to the second electrode terminal can be formed on the part of the bottom of the PCB opposite to the connection member A, and the connection member B coupled to the second electrode terminal by welding Electrically connected to the connection terminal via a safety element. In this structure, the connecting member B included in the PCM together with the safety element is coupled to the second electrode terminal of the battery cell by welding with the connecting member B attached to the insulating cap, and thereby the electrical connection between them. Real connection. The connecting member B is bent so that the connecting member is attached to the upper part of the battery cell.

一の実施例において、安全要素は、正の温度係数(PTC)要素(positive temperature coefficient (PTC) element)であってよい。PTC要素に結合された接続部材Bは、バッテリーパックの内部温度が内部の短絡によって急激に上昇する場合に、バッテリーパックの上部で電流の供給を妨げるように機能する。   In one embodiment, the safety element may be a positive temperature coefficient (PTC) element. The connecting member B coupled to the PTC element functions to prevent the supply of current at the upper part of the battery pack when the internal temperature of the battery pack rapidly rises due to an internal short circuit.

特に、本発明の二次バッテリーパックにおいて、PTC要素は、バッテリーセルとPCBとの間の回路上に位置付けられた接続部材Bに直接接続される。したがって、PTC要素は、バッテリーセルの温度により敏感に反応し、それによってバッテリーパックの安全性を大幅に向上させる。   In particular, in the secondary battery pack of the present invention, the PTC element is directly connected to the connecting member B positioned on the circuit between the battery cell and the PCB. Therefore, the PTC element reacts more sensitively to the temperature of the battery cell, thereby greatly improving the safety of the battery pack.

また、接続部材Aおよび接続部材Bの材料は、接続部材Aおよび接続部材Bが導電性材料で形成される限りは特に限定されない。好ましくは、接続部材Aおよび接続部材Bは、ニッケル板で作成される。   Further, the materials of the connection member A and the connection member B are not particularly limited as long as the connection member A and the connection member B are formed of a conductive material. Preferably, the connection member A and the connection member B are made of a nickel plate.

好ましくは、バッテリーセルの電極端子に接続される接続部材Aおよび接続部材Bの一部分が露出される状態で、絶縁テープが、PCBの底部に取り付けられる。したがって、バッテリーセルの電極端子に接続される接続部材Aおよび接続部材Bの一部を除く残りの部分が、絶縁テープによってPCMから電気的に絶縁される。   Preferably, the insulating tape is attached to the bottom of the PCB in a state where the connection member A and a part of the connection member B connected to the electrode terminals of the battery cell are exposed. Therefore, the remaining portions except for a part of the connection member A and the connection member B connected to the electrode terminals of the battery cell are electrically insulated from the PCM by the insulating tape.

具体的には、上記の構造において、絶縁テープは、第1の電極端子に面する接続部材Aのバッテリーセル結合部と第2の電極端子に面する接続部材Bの1つの面とを除く、残りの部分に取り付けられる。結果として、全体的な絶縁状態を維持しながら、バッテリーセルの電極端子とPCBとの間の電気的接続を安定的に実現することができる。   Specifically, in the above structure, the insulating tape excludes the battery cell coupling portion of the connection member A facing the first electrode terminal and one surface of the connection member B facing the second electrode terminal, Attach to the rest. As a result, the electrical connection between the electrode terminal of the battery cell and the PCB can be stably realized while maintaining the overall insulation state.

上部キャップの貫通孔を通じてバッテリーセルの結合溝に結合される結合部材は、さまざまなものであってよい。例えば、結合部材はねじであってよいが、結合部材はねじに限定されない。   The coupling member coupled to the coupling groove of the battery cell through the through hole of the upper cap may be various. For example, the coupling member may be a screw, but the coupling member is not limited to a screw.

上部キャップはバッテリーセルの上部に結合され、同時に、接続部材Aは上記結合によってバッテリーセルに電気的に接続され、それによってバッテリーパックの組立を容易に実現し、より安定した結合を確実にする。   The upper cap is coupled to the upper part of the battery cell, and at the same time, the connecting member A is electrically connected to the battery cell by the coupling, thereby easily realizing the assembly of the battery pack and ensuring a more stable coupling.

結合部材が貫通孔にはめ込まれている状態で、接着剤は、上部キャップの貫通孔に注入される。あるいは、封止部材は、上部キャップの貫通孔に挿入される。   In a state where the coupling member is fitted in the through hole, the adhesive is injected into the through hole of the upper cap. Alternatively, the sealing member is inserted into the through hole of the upper cap.

バッテリーセルの上部に結合される絶縁上部キャップに加えて、追加的な絶縁底部キャップをバッテリーセルの底部に取り付けることができ、被覆フィルムをバッテリーセルのバッテリーケースの外側に取り付けることができる。結果として、バッテリーセルを外部からの衝撃から保護し、バッテリーセルの電気的絶縁を維持することができる。   In addition to an insulating top cap coupled to the top of the battery cell, an additional insulating bottom cap can be attached to the bottom of the battery cell and a covering film can be attached to the outside of the battery case of the battery cell. As a result, the battery cell can be protected from external impact and the electrical insulation of the battery cell can be maintained.

本発明に係る二次バッテリーパックにおいて、任意のバッテリーセルが、バッテリーセルの種類および形状にかかわらず、種々の手法で使用される。好ましくは、角型リチウム二次バッテリーセルが使用される。   In the secondary battery pack according to the present invention, an arbitrary battery cell is used in various ways regardless of the type and shape of the battery cell. Preferably, a square lithium secondary battery cell is used.

本発明の別の態様によれば、カソード/セパレータ/アノード構造の電極組立体が電解質と一緒に密閉された状態でバッテリーケース内に取り付けられる構造を有するように構成されたバッテリーセルに取り付けられる保護回路モジュール(PCM)組立体において、バッテリーケースはその上部に第1の電極端子、第2の電極端子、および一対の結合溝が設けられる、保護回路モジュール(PCM)組立体であって、保護回路が上に形成されているプリント回路基板(PCB)、第1の電極端子および第2の電極端子にそれぞれ接続される接続部材Aおよび接続部材B、ならびに安全要素を含むPCMと、PCMが中に取り付けられている状態でバッテリーセルの上部に取り付けられる電気的に絶縁された上部キャップであって、それぞれの結合溝に通じる貫通孔を有する、電気的に絶縁された上部キャップと、を含み、接続部材Aは、バッテリーセルの第1の電極端子に接続される接続部材Aの接続部が、上部キャップに形成された貫通孔のうちの対応する1つを通じて露出されるように接続部材AがPCBの一端から横方向に突出する状態で、PCBの底部に結合され、結合孔が、接続部材Aの突出部分に形成され、バッテリーセルの第2の電極端子に接続される接続部材Bの接続部は、接続部材Bが安全要素を介して第2の電極端子に電気的に接続されるようにPCBの底部に位置付けられ、絶縁テープは、バッテリーセルの電極端子に接続される接続部材Aおよび接続部材Bの一部が露出される状態で、PCBの底部に取り付けられる、保護回路モジュール(PCM)組立体が提供される。   According to another aspect of the present invention, a cathode / separator / anode structure electrode assembly is attached to a battery cell configured to have a structure that is enclosed within a battery case in a sealed state with an electrolyte. In the circuit module (PCM) assembly, the battery case is a protection circuit module (PCM) assembly, in which a first electrode terminal, a second electrode terminal, and a pair of coupling grooves are provided on an upper portion of the battery case. PCM including a printed circuit board (PCB), a connecting member A and a connecting member B connected to the first electrode terminal and the second electrode terminal, respectively, and a safety element. An electrically isolated top cap that is attached to the top of the battery cell in the installed state and has a through hole leading to each coupling groove. The connection member A is connected to the first electrode terminal of the battery cell, and the connection portion of the connection member A corresponds to one of the through holes formed in the upper cap. The connecting member A is coupled to the bottom of the PCB so that the connecting member A projects laterally from one end of the PCB so as to be exposed through the coupling member A, and a coupling hole is formed in the projecting portion of the connecting member A. The connecting portion of the connecting member B connected to the terminal is positioned at the bottom of the PCB so that the connecting member B is electrically connected to the second electrode terminal via the safety element, and the insulating tape is connected to the battery cell. A protection circuit module (PCM) assembly is provided that is attached to the bottom of the PCB with a portion of the connection member A and the connection member B connected to the electrode terminals exposed.

バッテリーパックの一般的な組立プロセスにおいて、PCMはバッテリーセルに結合されるか又は配設され、上部キャップはバッテリーセルに取り付けられる。このようにして、PCM組立体は、バッテリーセルに取り付けられる。したがって、複数の溶接または半田付けプロセスが、バッテリーセルにPCM組立体を取り付けるために、必要とされる。結果として、欠陥率が高く、加えて、組立および配設のためのスペースが必要とされる。   In the general assembly process of a battery pack, the PCM is bonded or disposed to the battery cell and the top cap is attached to the battery cell. In this way, the PCM assembly is attached to the battery cell. Thus, multiple welding or soldering processes are required to attach the PCM assembly to the battery cell. As a result, the defect rate is high and, in addition, space for assembly and placement is required.

一方、本発明に係るPCM組立体において、接続部材Bは、PCMが上部キャップに取り付けられている状態で結合されるとともに曲げられ、PCMが結合部材を用いた結合によってバッテリーセルに取り付けられ、それによって接続される部分の欠陥率を大幅に減らし、バッテリーパックの製造プロセスを大幅に簡素化する。   On the other hand, in the PCM assembly according to the present invention, the connecting member B is joined and bent in a state where the PCM is attached to the upper cap, and the PCM is attached to the battery cell by joining using the joining member. This greatly reduces the defect rate of the connected parts and greatly simplifies the battery pack manufacturing process.

前記PCM組立体は、本発明が属する技術分野において新規である。   The PCM assembly is novel in the technical field to which the present invention belongs.

本発明の更なる態様によれば、(a)安全要素の1つの面に接続部材Bを結合するとともに、前記安全要素の反対側の面に絶縁テープを取り付けるステップと、(b)保護回路が上に形成されているプリント回路基板(PCB)の底部に安全要素のもう1つの面を結合するステップと、(c)結合孔が中に形成されている接続部材Aを、接続部材AがPCBの底部の一端から横方向に突出する状態でPCBの底部に結合して、保護回路モジュール(PCM)を製造するステップと、(d)PCMを絶縁上部キャップの中に取り付けるステップと、(e)絶縁テープを、PCMの底部の、バッテリーセルの第1の電極端子に接続される接続部材Aの一部およびバッテリーセルの第2の電極端子に接続される接続部材Bの一部を除く残りの部分に取り付けるステップと、(f)溶接によって第2の電極端子に接続部材Bを結合するとともに、接続部材Bを曲げてバッテリーセルの上部に上部キャップを取り付けるステップと、(g)ねじ止めによってバッテリーセルに上部キャップを結合して、第1の電極端子と接続部材Aとの間の電気的接続および機械的結合を実現するステップと、(h)接着によってバッテリーセルの底部に絶縁底部キャップを結合するステップと、(i)ねじ止め構造を有するように構成されている上部キャップの貫通孔に、接着剤を注入するか又は封止部材を挿入するステップと、(j)被覆フィルムでバッテリーパックの外側を包むステップと、を含む、二次バッテリーパックを製造する方法が提供される。   According to a further aspect of the present invention, (a) coupling the connecting member B to one surface of the safety element and attaching an insulating tape to the opposite surface of the safety element; and (b) a protection circuit. Joining the other side of the safety element to the bottom of the printed circuit board (PCB) formed thereon, and (c) the connecting member A in which the coupling hole is formed, and the connecting member A is the PCB. Bonding to the bottom of the PCB in a laterally protruding manner from one end of the bottom of the board to manufacture a protection circuit module (PCM); (d) mounting the PCM in an insulating top cap; and (e) The remaining part of the insulating tape excluding the part of the connecting member A connected to the first electrode terminal of the battery cell and the part of the connecting member B connected to the second electrode terminal of the battery cell at the bottom of the PCM Attaching to the part, and (f) connecting member B to the second electrode terminal by welding. And attaching the upper cap to the upper part of the battery cell by bending the connecting member B, and (g) connecting the upper cap to the battery cell by screwing, and connecting the first electrode terminal and the connecting member A Providing an electrical connection and mechanical coupling of: (h) bonding an insulating bottom cap to the bottom of the battery cell by gluing; and (i) a top cap configured to have a screwed structure. There is provided a method for manufacturing a secondary battery pack, the method comprising: injecting an adhesive into the through hole or inserting a sealing member; and (j) wrapping the outside of the battery pack with a covering film. .

その結果、二次バッテリーパックを製造する従来の方法と比較して、製造プロセスの数を削減し、よりコンパクトなバッテリーパックを製造することができる。   As a result, the number of manufacturing processes can be reduced and a more compact battery pack can be manufactured compared to the conventional method of manufacturing a secondary battery pack.

本発明の上記のおよびその他の目的、特徴、ならびにその他の利点は、以下の詳細な説明を添付の図面と併せて理解することによってより明確に理解されるであろう。   The above and other objects, features and other advantages of the present invention will be more clearly understood when the following detailed description is understood in conjunction with the accompanying drawings.

本発明の一実施形態に係るバッテリーセルの上部および絶縁上部キャップを示す分解斜視図である。1 is an exploded perspective view showing an upper part of a battery cell and an insulating upper cap according to an embodiment of the present invention. 上部キャップに取り付けられた保護回路モジュール(PCM)および絶縁テープを示す代表的な図である。It is a typical figure which shows the protection circuit module (PCM) and insulating tape which were attached to the upper cap. 図2の分解斜視図である。FIG. 3 is an exploded perspective view of FIG. バッテリーセルの上部に取り付けられた絶縁上部キャップおよび結合部材を示す代表的な図である。FIG. 6 is a representative view showing an insulating top cap and a coupling member attached to the top of the battery cell. 図1の接続部材Aを代表的に示す垂直断面図である。FIG. 2 is a vertical sectional view representatively showing a connection member A in FIG. 正の温度係数(PTC)要素および接続部材Bを示す分解斜視図である。FIG. 3 is an exploded perspective view showing a positive temperature coefficient (PTC) element and a connecting member B. 接続部材Bがプリント回路基板(PCB)の底部および絶縁テープに結合される、正の温度係数(PTC)要素を示す分解斜視図である。FIG. 3 is an exploded perspective view showing a positive temperature coefficient (PTC) element with connecting member B coupled to the bottom of a printed circuit board (PCB) and insulating tape. バッテリーセル、底部キャップ、および被覆フィルムを示す分解斜視図である。It is a disassembled perspective view which shows a battery cell, a bottom part cap, and a coating film.

ここから、本発明の好ましい実施形態が、添付の図面を参照して詳細に説明される。しかしながら、本発明の範囲は、示される実施形態によって限定されないことに留意されたい。   Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the scope of the present invention is not limited by the illustrated embodiments.

図1は、本発明の一実施形態に係るバッテリーセルの上部および絶縁上部キャップを示す分解斜視図であり、図2は、上部キャップに取り付けられた保護回路モジュール(PCM)および絶縁テープを示す代表的な図である。   FIG. 1 is an exploded perspective view showing an upper part and an insulating upper cap of a battery cell according to an embodiment of the present invention, and FIG. 2 is a representative showing a protection circuit module (PCM) and an insulating tape attached to the upper cap. It is a typical figure.

これらの図を参照すると、二次バッテリーパック100は、バッテリーセル110、ならびに上部キャップ130が保護回路モジュール(PCM)120を囲むようにバッテリーセル110の上部に取り付けられたPCM120および上部キャップ130を含む。   Referring to these figures, the secondary battery pack 100 includes a battery cell 110 and a PCM 120 and an upper cap 130 attached to the top of the battery cell 110 so that the upper cap 130 surrounds a protection circuit module (PCM) 120. .

バッテリーセル110は、電極組立体が電解質と一緒に密閉された状態でバッテリーケース内に取り付けられ、カソード端子111、アノード端子112、ならびに結合溝113および結合溝114の対がバッテリーケースの上部に形成されている構造を有するように構成される。   The battery cell 110 is mounted in the battery case with the electrode assembly sealed together with the electrolyte, and the cathode terminal 111, the anode terminal 112, and the pair of the coupling groove 113 and the coupling groove 114 are formed in the upper part of the battery case. It is comprised so that it may have a structure.

PCM120は、保護回路が上に形成されているプリント回路基板(PCB)123と、カソード端子111およびアノード端子112にそれぞれ接続される接続部材121および接続部材122と、正の温度係数(PTC)要素124と、を含む。   The PCM 120 includes a printed circuit board (PCB) 123 having a protection circuit formed thereon, a connecting member 121 and a connecting member 122 connected to the cathode terminal 111 and the anode terminal 112, respectively, and a positive temperature coefficient (PTC) element. 124.

上部キャップ130は、電気絶縁材料で形成される。上部キャップ130には、結合溝113および結合溝114にそれぞれ通じる貫通孔133および貫通孔134が両端に設けられている。   The upper cap 130 is made of an electrically insulating material. The upper cap 130 is provided with a through-hole 133 and a through-hole 134 at both ends that communicate with the coupling groove 113 and the coupling groove 114, respectively.

絶縁テープ141は、上部キャップ130、およびカソード端子111に接続される接続部材A 121の一部が露出されている状態で、PCB123の底部に取り付けられる。   The insulating tape 141 is attached to the bottom of the PCB 123 with the upper cap 130 and a part of the connection member A 121 connected to the cathode terminal 111 exposed.

アノード端子112は、バッテリーセル110の上部に形成される。アノード端子112は、金属容器で形成されたバッテリーケースからアノード端子112が絶縁されている状態で、上方に突出する。アノード端子112を除く残りの部分は、カソード端子111を構成する。バッテリーセル110には、その上部の片側に、金属球またはポリマー樹脂によって密封される電解質注入ポート116が設けられている。   The anode terminal 112 is formed on the upper part of the battery cell 110. The anode terminal 112 protrudes upward in a state where the anode terminal 112 is insulated from a battery case formed of a metal container. The remaining part excluding the anode terminal 112 constitutes the cathode terminal 111. The battery cell 110 is provided with an electrolyte injection port 116 which is sealed with a metal sphere or polymer resin on one side of the upper part thereof.

図3は、図2の分解斜視図であり、図4は、バッテリーセルの上部に取り付けられた絶縁上部キャップおよび結合部材を示す代表的な図であり、図5は、バッテリーセルに結合された図1の接続部材A 121を代表的に示す垂直断面図である。   3 is an exploded perspective view of FIG. 2, FIG. 4 is a representative view showing an insulating top cap and a coupling member attached to the top of the battery cell, and FIG. 5 is coupled to the battery cell. FIG. 2 is a vertical sectional view representatively showing a connection member A 121 of FIG.

これらの図を図1と一緒に参照すると、接続部材A 121は、PCB123の底部に結合されるPCB結合部1211と、バッテリーセル110の上部に結合されるバッテリーセル結合部1212と、を含む。バッテリーセル結合部1212は、上部キャップ130の貫通孔133を通じてバッテリーセル結合部1212が露出されるように、PCB123の一端から横方向に突出する。   Referring to these drawings together with FIG. 1, the connecting member A 121 includes a PCB coupling part 1211 coupled to the bottom of the PCB 123 and a battery cell coupling part 1212 coupled to the upper part of the battery cell 110. The battery cell coupling part 1212 protrudes laterally from one end of the PCB 123 so that the battery cell coupling part 1212 is exposed through the through hole 133 of the upper cap 130.

その結果、PCM120および上部キャップ130がバッテリーセル110の上部に配設されている状態で、結合部材151および結合部材152は、上部キャップ130の貫通孔133および貫通孔134を通じてバッテリーセル110の結合溝113および結合溝114に結合される。接続部材A 121は、結合部材151によって電極端子111に接続される。   As a result, in a state where the PCM 120 and the upper cap 130 are disposed on the upper part of the battery cell 110, the coupling member 151 and the coupling member 152 are coupled to the coupling groove of the battery cell 110 through the through hole 133 and the through hole 134 of the upper cap 130. 113 and the coupling groove 114 are coupled. Connection member A 121 is connected to electrode terminal 111 by coupling member 151.

その結果、接続部材A 121のPCB結合部1211は、溶接によってPCB123の底部に結合され、バッテリーセル結合部1212は、バッテリーセル110の上部に形成された結合溝113に、物理的接触によって電気的に接続され、結合部材(図示せず)は、バッテリーセル110の上部に形成された結合溝113に、上部キャップ130の貫通孔133および接続部材A 121の結合孔1213を通じて結合され、それによって機械的結合および電気的接続を同時に実現する。   As a result, the PCB coupling portion 1211 of the connecting member A 121 is coupled to the bottom of the PCB 123 by welding, and the battery cell coupling portion 1212 is electrically connected to the coupling groove 113 formed on the upper portion of the battery cell 110 by physical contact. The coupling member (not shown) is coupled to the coupling groove 113 formed in the upper part of the battery cell 110 through the through hole 133 of the upper cap 130 and the coupling hole 1213 of the connection member A 121, thereby Simultaneous coupling and electrical connection.

図6は、PTC要素および接続部材Bを代表的に示す分解斜視図であり、図7は、接続部材BがPCBの底部および絶縁テープに結合される、PTC要素を代表的に示す分解斜視図である。   FIG. 6 is an exploded perspective view typically showing the PTC element and the connecting member B, and FIG. 7 is an exploded perspective view showing the PTC element representatively where the connecting member B is coupled to the bottom of the PCB and the insulating tape. It is.

これらの図を図1と一緒に参照すると、接続部材B 122は溶接によってPTC要素124の1つの面に結合され、絶縁テープはPTC要素124の反対側の面に取り付けられ、PTC要素124のもう1つの面は、溶接によってPCB123の底部に結合される。   Referring to these figures together with FIG. 1, the connecting member B 122 is joined to one side of the PTC element 124 by welding, and the insulating tape is attached to the opposite side of the PTC element 124, and the other side of the PTC element 124 is connected. One face is joined to the bottom of the PCB 123 by welding.

すなわち、絶縁テープは、アノード端子112に接続される接続部材B 122の1つの面と接続部材A 121のバッテリーセル接続部とを除く、残りの部分に取り付けられ、PCB123は、PTC要素124を介してバッテリーセル110のアノード端子112に電気的に接続される。   That is, the insulating tape is attached to the remaining portion except for one surface of the connection member B 122 connected to the anode terminal 112 and the battery cell connection portion of the connection member A 121, and the PCB 123 is connected via the PTC element 124. And electrically connected to the anode terminal 112 of the battery cell 110.

図8は、バッテリーセル、絶縁底部キャップ、および被覆フィルムを示す分解斜視図である。   FIG. 8 is an exploded perspective view showing the battery cell, the insulating bottom cap, and the covering film.

図8を参照すると、絶縁底部キャップ150はバッテリーセル110の底部に結合され、被覆フィルム160は、被覆フィルム160がバッテリーセル110のバッテリーケースの外側を包むように、バッテリーセル110のバッテリーケースの外側に取り付けられる。   Referring to FIG. 8, the insulating bottom cap 150 is coupled to the bottom of the battery cell 110, and the covering film 160 is placed on the outside of the battery case of the battery cell 110 so that the covering film 160 wraps the outside of the battery case of the battery cell 110. It is attached.

被覆フィルム160は、バッテリーセル110の外部との電気的絶縁を維持するため、および製品情報を示すため、バッテリーケースの外側に取り付けられる。熱収縮性の素材で作られる被覆フィルム160は、チューブ状に形成される。被覆フィルム160は、バッテリーセル110を包むように配設され、次に、熱が被覆フィルム160に加えられ、その結果、被覆フィルム160は、縮んでバッテリーセル110のバッテリーケースの外側に密着する。   The covering film 160 is attached to the outside of the battery case in order to maintain electrical insulation from the outside of the battery cell 110 and to show product information. The covering film 160 made of a heat-shrinkable material is formed in a tube shape. The covering film 160 is disposed so as to enclose the battery cell 110, and then heat is applied to the covering film 160. As a result, the covering film 160 contracts and adheres to the outside of the battery case of the battery cell 110.

上記の説明から明らかなように、本発明に係る二次バッテリーパックは、バッテリーセル、プリント回路基板(PCB)、および上部キャップの特定の構造に基づいて、シンプルな製造プロセスによって、コンパクトな構造を持つように製造される。   As is clear from the above description, the secondary battery pack according to the present invention has a compact structure through a simple manufacturing process based on the specific structure of the battery cell, the printed circuit board (PCB), and the upper cap. Manufactured to have.

本発明の好ましい実施形態が例示の目的で開示されたが、当業者は、添付の特許請求の範囲に開示された本発明の範囲および精神から逸脱することなしに種々の修正、追加、および置換が可能であることを理解するであろう。   While preferred embodiments of the invention have been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions can be made without departing from the scope and spirit of the invention as disclosed in the appended claims. You will understand that is possible.

100 二次バッテリーパック
110 バッテリーセル
111 カソード端子
112 アノード端子
113 結合溝
114 結合溝
116 電解質注入ポート
120 保護回路モジュール(PCM)
121 接続部材、接続部材A
1211 PCB結合部
1212 バッテリーセル結合部
1213 結合孔
122 接続部材、接続部材B
123 プリント回路基板(PCB)
124 正の温度係数(PTC)要素
130 上部キャップ
133 貫通孔
134 貫通孔
141 絶縁テープ
150 絶縁底部キャップ
151 結合部材
152 結合部材
160 被覆フィルム
100 Secondary battery pack
110 battery cell
111 Cathode terminal
112 Anode terminal
113 Coupling groove
114 coupling groove
116 Electrolyte injection port
120 Protection circuit module (PCM)
121 Connecting member, connecting member A
1211 PCB joint
1212 Battery cell connection
1213 Bonding hole
122 Connecting member, connecting member B
123 Printed Circuit Board (PCB)
124 Positive temperature coefficient (PTC) factor
130 Top cap
133 Through hole
134 Through hole
141 Insulation tape
150 Insulated bottom cap
151 coupling member
152 coupling member
160 Covered film

Claims (14)

カソード/セパレータ/アノード構造の電極組立体が電解質と一緒に密閉された状態でバッテリーケース内に取り付けられる構造を有するように構成されたバッテリーセルであって、
前記バッテリーケースはその上部に第1の電極端子、第2の電極端子、および一対の結合溝が設けられ、前記結合溝のうちの1つは前記第1の電極端子に形成され、前記第2の電極端子は前記バッテリーケースの上部の中央から突出する、バッテリーセルと、
保護回路が上に形成されているプリント回路基板(PCB)、前記第1の電極端子および前記第2の電極端子にそれぞれ接続される接続部材Aおよび接続部材B、ならびに安全要素を含む保護回路モジュール(PCM)と、
前記PCMを囲むように前記バッテリーセルの上部に取り付けられる電気的に絶縁された上部キャップであって、それぞれの前記結合溝に通じる貫通孔を有する、電気的に絶縁された上部キャップと、
を含み、
前記接続部材Aは、前記バッテリーセルの前記第1の電極端子に接続される前記接続部材Aの接続部が、前記上部キャップに形成された前記貫通孔のうちの対応する1つを通じて露出されるように、前記接続部材Aが前記PCBの一端から横方向に突出する状態で前記PCBの底部に結合され、結合孔が、前記接続部材Aの突出部分に形成され、前記バッテリーセルの前記第2の電極端子に接続される前記接続部材Bの接続部は、前記接続部材Bが前記安全要素を介して前記PCBに電気的に接続されるように前記PCBの底部に位置付けられ、
結合部材が、前記PCMおよび前記上部キャップが前記バッテリーセルの上部に配設されている状態で前記上部キャップの前記貫通孔を通じて前記バッテリーセルのそれぞれの前記結合溝に結合され、前記接続部材Aは、前記結合部材のうちの対応する1つによって前記第1の電極端子に機械的に結合され、電気的に接続され
前記バッテリーセルの前記電極端子に接続される前記接続部材Aおよび接続部材Bの一部分が露出された状態で、絶縁テープが前記PCBの底部に取り付けられ、
前記絶縁テープは、前記第1の電極端子に面する前記接続部材Aのバッテリーセル結合部及び前記第2の電極端子に面する前記接続部材Bの1つの面を除く、前記PCBの底部の残りの部分全体に取り付けられる、二次バッテリーパック。
A battery cell configured to have a structure in which an electrode assembly having a cathode / separator / anode structure is attached in a battery case in a sealed state together with an electrolyte,
The battery case is provided with a first electrode terminal, a second electrode terminal, and a pair of coupling grooves in an upper portion thereof, and one of the coupling grooves is formed in the first electrode terminal, and the second The electrode terminal of the battery cell protrudes from the upper center of the battery case, and
A protection circuit module including a printed circuit board (PCB) having a protection circuit formed thereon, connection member A and connection member B connected to the first electrode terminal and the second electrode terminal, respectively, and a safety element (PCM)
An electrically isolated upper cap attached to the upper portion of the battery cell so as to surround the PCM, the electrically insulated upper cap having a through hole communicating with each of the coupling grooves;
Including
In the connection member A, a connection portion of the connection member A connected to the first electrode terminal of the battery cell is exposed through a corresponding one of the through holes formed in the upper cap. As described above, the connecting member A is coupled to the bottom portion of the PCB in a state of projecting laterally from one end of the PCB, and a coupling hole is formed in the projecting portion of the connecting member A. The connecting portion of the connecting member B connected to the electrode terminal is positioned at the bottom of the PCB such that the connecting member B is electrically connected to the PCB via the safety element,
A coupling member is coupled to each coupling groove of the battery cell through the through hole of the upper cap in a state where the PCM and the upper cap are disposed on the battery cell, and the connection member A is , Mechanically coupled to and electrically connected to the first electrode terminal by a corresponding one of the coupling members ;
With a portion of the connection member A and connection member B connected to the electrode terminals of the battery cell exposed, an insulating tape is attached to the bottom of the PCB,
The insulating tape is the rest of the bottom of the PCB except for the battery cell coupling portion of the connection member A facing the first electrode terminal and one surface of the connection member B facing the second electrode terminal. A secondary battery pack that can be attached to all parts of the battery pack.
バッテリーケースは、金属容器である請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, wherein the battery case is a metal container. 前記第1の電極端子はカソード端子であり、前記第2の電極端子はアノード端子である請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, wherein the first electrode terminal is a cathode terminal, and the second electrode terminal is an anode terminal. 前記結合溝は、前記バッテリーケースの上部の両端に位置付けられる請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, wherein the coupling grooves are positioned at both ends of the upper part of the battery case. 前記接続部材Aは、半田付けによって前記PCBの底部に結合される請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, wherein the connection member A is coupled to a bottom portion of the PCB by soldering. 前記接続部材Aは、前記PCBの底部に結合されるPCB結合部と、前記バッテリーセルの上部に結合されるバッテリーセル結合部と、を含み、前記バッテリーセル結合部は、前記上部キャップの前記貫通孔のうちの対応する1つを通じて前記バッテリーセル結合部が露出されるように前記PCBの一端から横方向に突出する請求項1に記載の二次バッテリーパック。   The connection member A includes a PCB coupling portion coupled to a bottom portion of the PCB, and a battery cell coupling portion coupled to an upper portion of the battery cell. The battery cell coupling portion includes the through-hole of the upper cap. The secondary battery pack of claim 1, wherein the secondary battery pack projects laterally from one end of the PCB such that the battery cell coupling portion is exposed through a corresponding one of the holes. 前記第2の電極端子に接続される接続端子が、前記PCBの底部における前記接続部材Aと反対側の部分に形成され、溶接によって前記第2の電極端子に結合される前記接続部材Bが、前記安全要素を介して前記接続端子に電気的に接続される請求項1に記載の二次バッテリーパック。   A connection terminal connected to the second electrode terminal is formed in a portion on the opposite side of the connection member A at the bottom of the PCB, and the connection member B coupled to the second electrode terminal by welding, The secondary battery pack according to claim 1, wherein the secondary battery pack is electrically connected to the connection terminal via the safety element. 前記安全要素は、正の温度係数(PTC)要素である請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, wherein the safety element is a positive temperature coefficient (PTC) element. 前記接続部材Aおよび前記接続部材Bは、ニッケル板から作られる請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, wherein the connection member A and the connection member B are made of a nickel plate. 前記結合部材は、ねじである請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, wherein the coupling member is a screw. 前記バッテリーセルの前記バッテリーケースの外側に取り付けられる被覆フィルムをさらに含む請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, further comprising a covering film attached to the outside of the battery case of the battery cell. 前記バッテリーセルは、角型リチウム二次バッテリーセルである請求項1に記載の二次バッテリーパック。   The secondary battery pack according to claim 1, wherein the battery cell is a prismatic lithium secondary battery cell. カソード/セパレータ/アノード構造の電極組立体が電解質と一緒に密閉された状態でバッテリーケース内に取り付けられる構造を有するように構成されたバッテリーセルに取り付けられる保護回路モジュール(PCM)組立体において、前記バッテリーケースには上部に第1の電極端子、第2の電極端子、および一対の結合溝が設けられる、保護回路モジュール(PCM)組立体であって、
保護回路が上に形成されているプリント回路基板(PCB)、前記第1の電極端子および前記第2の電極端子にそれぞれ接続される接続部材Aおよび接続部材B、ならびに安全要素を含むPCMと、
前記PCMが中に取り付けられている状態で前記バッテリーセルの上部に取り付けられる電気的に絶縁された上部キャップであって、それぞれの前記結合溝に通じる貫通孔を有する、電気的に絶縁された上部キャップと、
を含み、
前記接続部材Aは、前記バッテリーセルの前記第1の電極端子に接続される前記接続部材Aの接続部が、前記上部キャップに形成された前記貫通孔のうちの対応する1つを通じて露出されるように、前記接続部材Aが前記PCBの一端から横方向に突出する状態で前記PCBの底部に結合され、結合孔が、前記接続部材Aの突出部分に形成され、前記バッテリーセルの前記第2の電極端子に接続される前記接続部材Bの接続部は、前記接続部材Bが前記安全要素を介して前記PCBに電気的に接続されるように、前記PCBの底部に位置付けられ、
前記バッテリーセルの前記電極端子に接続される前記接続部材Aおよび前記接続部材Bの一部が露出される状態で、絶縁テープが、前記PCBの底部に取り付けられ
前記絶縁テープは、前記第1の電極端子に面する前記接続部材Aのバッテリーセル結合部及び前記第2の電極端子に面する前記接続部材Bの1つの面を除く、前記PCBの底部の残りの部分全体に取り付けられる、保護回路モジュール(PCM)組立体。
A protection circuit module (PCM) assembly attached to a battery cell configured to have a structure in which a cathode / separator / anode structure electrode assembly is mounted in a battery case in a sealed state together with an electrolyte. The battery case is a protection circuit module (PCM) assembly in which a first electrode terminal, a second electrode terminal, and a pair of coupling grooves are provided in an upper part,
A printed circuit board (PCB) having a protection circuit formed thereon, a connecting member A and a connecting member B connected to the first electrode terminal and the second electrode terminal, respectively, and a PCM including a safety element;
An electrically isolated top cap attached to the top of the battery cell with the PCM attached therein, the electrically isolated top having a through hole leading to the respective coupling groove A cap,
Including
In the connection member A, a connection portion of the connection member A connected to the first electrode terminal of the battery cell is exposed through a corresponding one of the through holes formed in the upper cap. As described above, the connecting member A is coupled to the bottom portion of the PCB in a state of projecting laterally from one end of the PCB, and a coupling hole is formed in the projecting portion of the connecting member A. The connecting portion of the connecting member B connected to the electrode terminal is positioned at the bottom of the PCB such that the connecting member B is electrically connected to the PCB via the safety element,
In a state where a part of the connection member A and the connection member B connected to the electrode terminal of the battery cell is exposed, an insulating tape is attached to the bottom of the PCB ,
The insulating tape is the rest of the bottom of the PCB except for the battery cell coupling portion of the connection member A facing the first electrode terminal and one surface of the connection member B facing the second electrode terminal. Ru is attached to the whole portion, a protection circuit module (PCM) assembly.
(a)安全要素の1つの面に接続部材Bを結合するとともに、前記安全要素の反対側の面に絶縁テープを取り付けるステップと、
(b)保護回路が上に形成されているプリント回路基板(PCB)の底部に、前記安全要素のもう1つの面を結合するステップと、
(c)結合孔が中に形成されている接続部材Aを、前記接続部材Aが前記PCBの底部の一端から横方向に突出する状態で前記PCBの底部に結合して保護回路モジュール(PCM)を製造するステップと、
(d)前記PCMを絶縁上部キャップの中に取り付けるステップと、
(e)絶縁テープを、前記PCMの底部における、バッテリーセルの第1の電極端子に接続される前記接続部材Aの一部および前記バッテリーセルの第2の電極端子に接続される前記接続部材Bの一部を除く残りの部分全体に取り付けるステップと、
(f)溶接によって前記第2の電極端子に前記接続部材Bを結合するとともに、前記接続部材Bを曲げて前記バッテリーセルの上部に前記上部キャップを取り付けるステップと、
(g)ねじ止めによって前記バッテリーセルに前記上部キャップを結合して、前記第1の電極端子と前記接続部材Aとの間の電気的接続および機械的結合を実現するステップと、
(h)接着によって前記バッテリーセルの底部に絶縁底部キャップを結合するステップと、
(i)ねじ止め構造を有するように構成されている前記上部キャップの貫通孔に、接着剤を注入するか、または封止部材を挿入するステップと、
(j)被覆フィルムで前記バッテリーパックの外側を包むステップと、
を含む、二次バッテリーパックを製造する方法。
(A) coupling the connecting member B to one surface of the safety element and attaching an insulating tape to the opposite surface of the safety element;
(B) coupling another side of the safety element to the bottom of a printed circuit board (PCB) on which a protection circuit is formed;
(C) A protection circuit module (PCM) in which a connection member A having a coupling hole formed therein is coupled to the bottom of the PCB in a state where the connection member A projects laterally from one end of the bottom of the PCB. Manufacturing steps and
(D) mounting the PCM in an insulating top cap;
(E) A part of the connection member A connected to the first electrode terminal of the battery cell and the connection member B connected to the second electrode terminal of the battery cell at the bottom of the PCM. Attaching to the entire remaining part except for a part of
(F) joining the connection member B to the second electrode terminal by welding, bending the connection member B, and attaching the upper cap to the upper part of the battery cell;
(G) coupling the upper cap to the battery cell by screwing to achieve electrical and mechanical coupling between the first electrode terminal and the connecting member A;
(H) bonding an insulating bottom cap to the bottom of the battery cell by bonding;
(I) injecting an adhesive or inserting a sealing member into a through hole of the upper cap configured to have a screwing structure;
(J) wrapping the outside of the battery pack with a covering film;
A method for manufacturing a secondary battery pack, comprising:
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